# SVG路径命令标准定义
SVG_COMMANDS = [
    'M',  # moveto
    'L',  # lineto 
    'H',  # horizontal lineto
    'V',  # vertical lineto
    'C',  # curveto
    'S',  # smooth curveto
    'Q',  # quadratic Bézier
    'T',  # smooth quadratic Bézier
    'A',  # elliptical arc
    'Z'   # closepath
]